The cable junction boxes are made of a thermoplastic polypropylene with plug-in seals made of ethylene vinyl acetate (EVA). Cables can be installed directly through the 10 x M25 seals, or the seals can be cut with a knife at the designated points to create an entry opening for cables or pipes. Alternatively, cable glands can be inserted through the openings instead of the seals and locked from the inside with a lock nut. The cable junction boxes can be mounted on mounting plates in openings on the floor using 3.5x9.5 self-tapping screws. Clear internal dimensions: 136x102x57 lid with labelling field and sealable.